ID: 2457

AQSQID: 401090097

Site Name: Near Road Okc

Added: April 21, 2020, 6:24 p.m.

Updated: Sept. 19, 2021, 10:57 p.m.

Location: Oklahoma City (Meridian Ave Corridor), OK

Reporting: True, Located: True

Current AQI: 54.0

Oklahoma City (Meridian Ave Corridor) OK, US: 35.502968, -97.577674

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 19, 2021, 9 p.m. 23.0 ppb (22) 9.0 ppb (9) N/A 13.0 ppb (13) N/A N/A N/A 0.8 ppb (10) 28.0 μg/m3 (26) 13.2 μg/m3 (54) 54.0
 
Sept. 19, 2021, 8 p.m. 26.0 ppb (25) 10.0 ppb (10) N/A 16.0 ppb (16) N/A N/A N/A 0.8 ppb (10) 28.0 μg/m3 (26) 13.3 μg/m3 (54) 54.0
 
Sept. 19, 2021, 7 p.m. 19.0 ppb (18) 7.0 ppb (7) N/A 12.0 ppb (12) N/A N/A N/A 0.7 ppb (8) 29.0 μg/m3 (27) 14.0 μg/m3 (55) 55.0
 
Sept. 19, 2021, 6 p.m. 20.0 ppb (19) 7.0 ppb (7) N/A 12.0 ppb (12) N/A N/A N/A 0.8 ppb (10) 28.0 μg/m3 (26) 13.3 μg/m3 (54) 54.0
 
Sept. 19, 2021, 5 p.m. 17.0 ppb (17) 6.0 ppb (6) N/A 10.0 ppb (10) N/A N/A N/A 0.7 ppb (8) 27.0 μg/m3 (25) 12.3 μg/m3 (52) 52.0
 
Sept. 19, 2021, 4 p.m. 11.0 ppb (11) 3.0 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.6 ppb (7) 24.0 μg/m3 (23) 11.7 μg/m3 (49) 49.0
 
Sept. 19, 2021, 3 p.m. 17.0 ppb (17) 8.0 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.6 ppb (7) 29.0 μg/m3 (27) 12.6 μg/m3 (53) 53.0
 
Sept. 19, 2021, 2 p.m. 28.0 ppb (27) 14.0 ppb (14) N/A 13.0 ppb (13) N/A N/A N/A 0.8 ppb (10) 28.0 μg/m3 (26) 12.2 μg/m3 (52) 52.0
 
Sept. 19, 2021, 1 p.m. 26.0 ppb (25) 13.0 ppb (13) N/A 13.0 ppb (13) N/A N/A N/A 0.7 ppb (8) 29.0 μg/m3 (27) 12.2 μg/m3 (52) 52.0
 
Sept. 19, 2021, noon 26.0 ppb (25) 11.0 ppb (11) N/A 15.0 ppb (15) N/A N/A N/A 0.6 ppb (7) 35.0 μg/m3 (33) 14.2 μg/m3 (56) 56.0
 
Sept. 19, 2021, 11 a.m. 16.0 ppb (16) 3.0 ppb (3) N/A 13.0 ppb (13) N/A N/A N/A 0.6 ppb (7) 28.0 μg/m3 (26) 13.7 μg/m3 (55) 55.0
 
Sept. 19, 2021, 10 a.m. 10.0 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A N/A N/A 0.5 ppb (6) 27.0 μg/m3 (25) 14.4 μg/m3 (56) 56.0
 
Sept. 19, 2021, 9 a.m. 18.0 ppb (17) 0.0 ppb (0) N/A 17.0 ppb (17) N/A N/A N/A 0.7 ppb (8) 34.0 μg/m3 (32) 16.2 μg/m3 (60) 60.0
 
Sept. 19, 2021, 8 a.m. 31.0 ppb (30) 6.0 ppb (6) N/A 24.0 ppb (23) N/A N/A N/A 0.9 ppb (11) 41.0 μg/m3 (38) 17.3 μg/m3 (62) 62.0
 
Sept. 19, 2021, 7 a.m. 20.0 ppb (19) 0.0 ppb (0) N/A 20.0 ppb (19) N/A N/A N/A 0.8 ppb (10) 41.0 μg/m3 (38) 16.4 μg/m3 (61) 61.0
 
Sept. 19, 2021, 6 a.m. 22.0 ppb (21) 0.0 ppb (0) N/A 21.0 ppb (20) N/A N/A N/A 0.8 ppb (10) 44.0 μg/m3 (41) 15.8 μg/m3 (59) 59.0
 
Sept. 19, 2021, 5 a.m. 24.0 ppb (23) 2.0 ppb (2) N/A 21.0 ppb (20) N/A N/A N/A 0.8 ppb (10) 34.0 μg/m3 (32) 14.1 μg/m3 (56) 56.0
 
Sept. 19, 2021, 4 a.m. 50.0 ppb (48) 22.0 ppb (21) N/A 27.0 ppb (26) N/A N/A N/A 1.1 ppb (13) 35.0 μg/m3 (33) 13.7 μg/m3 (55) 55.0
 
Sept. 19, 2021, 3 a.m. 40.0 ppb (38) 14.0 ppb (14) N/A 25.0 ppb (24) N/A N/A N/A 1.1 ppb (13) 32.0 μg/m3 (30) 12.9 μg/m3 (53) 53.0
 
Sept. 19, 2021, 2 a.m. 40.0 ppb (38) 11.0 ppb (11) N/A 28.0 ppb (27) N/A N/A N/A 1.0 ppb (12) 32.0 μg/m3 (30) 14.2 μg/m3 (56) 56.0
 
Sept. 19, 2021, 1 a.m. 46.0 ppb (44) 17.0 ppb (17) N/A 28.0 ppb (27) N/A N/A N/A 1.1 ppb (13) 35.0 μg/m3 (33) 14.9 μg/m3 (57) 57.0
 
Sept. 19, 2021, midnight 33.0 ppb (32) 14.0 ppb (14) N/A 18.0 ppb (17) N/A N/A N/A 0.9 ppb (11) 31.0 μg/m3 (29) 13.0 μg/m3 (53) 53.0
 
Sept. 18, 2021, 11 p.m. 22.0 ppb (21) 11.0 ppb (11) N/A 11.0 ppb (11) N/A N/A N/A 0.8 ppb (10) 30.0 μg/m3 (28) 13.7 μg/m3 (55) 55.0
 
Sept. 18, 2021, 10 p.m. 23.0 ppb (22) 11.0 ppb (11) N/A 12.0 ppb (12) N/A N/A N/A 0.8 ppb (10) 31.0 μg/m3 (29) 15.7 μg/m3 (59) 59.0
 
Sept. 18, 2021, 9 p.m. 25.0 ppb (24) 10.0 ppb (10) N/A 14.0 ppb (14) N/A N/A N/A 0.7 ppb (8) 30.0 μg/m3 (28) 15.2 μg/m3 (58) 58.0
 
Sept. 18, 2021, 8 p.m. 24.0 ppb (23) 9.0 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.7 ppb (8) 30.0 μg/m3 (28) 14.9 μg/m3 (57) 57.0
 
Sept. 18, 2021, 7 p.m. 19.0 ppb (18) 8.0 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A 0.6 ppb (7) 31.0 μg/m3 (29) 16.7 μg/m3 (61) 61.0
 
Sept. 18, 2021, 6 p.m. 16.0 ppb (16) 6.0 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.7 ppb (8) 32.0 μg/m3 (30) 17.7 μg/m3 (63) 63.0
 
Sept. 18, 2021, 5 p.m. 13.0 ppb (13) 4.0 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.6 ppb (7) 32.0 μg/m3 (30) 18.8 μg/m3 (66) 66.0
 
Sept. 18, 2021, 4 p.m. 21.0 ppb (20) 8.0 ppb (8) N/A 12.0 ppb (12) N/A N/A N/A 0.8 ppb (10) 36.0 μg/m3 (34) 19.5 μg/m3 (67) 67.0
 
Sept. 18, 2021, 3 p.m. 28.0 ppb (27) 10.0 ppb (10) N/A 17.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 37.0 μg/m3 (35) 20.9 μg/m3 (70) 70.0
 
Sept. 18, 2021, 2 p.m. 36.0 ppb (34) 18.0 ppb (17) N/A 18.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 40.0 μg/m3 (38) 22.2 μg/m3 (73) 73.0
 
Sept. 18, 2021, 1 p.m. 39.0 ppb (37) 18.0 ppb (17) N/A 20.0 ppb (19) N/A N/A N/A 0.8 ppb (10) 40.0 μg/m3 (38) 22.1 μg/m3 (73) 73.0
 
Sept. 18, 2021, noon 50.0 ppb (48) 24.0 ppb (23) N/A 26.0 ppb (25) N/A N/A N/A 1.0 ppb (12) 40.0 μg/m3 (38) 22.2 μg/m3 (73) 73.0
 
Sept. 18, 2021, 11 a.m. 26.0 ppb (25) 5.0 ppb (5) N/A 21.0 ppb (20) N/A N/A N/A 0.7 ppb (8) 39.0 μg/m3 (37) 21.4 μg/m3 (71) 71.0
 
Sept. 18, 2021, 10 a.m. 26.0 ppb (25) 6.0 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.7 ppb (8) 39.0 μg/m3 (37) 21.1 μg/m3 (70) 70.0
 
Sept. 18, 2021, 9 a.m. 25.0 ppb (24) 6.0 ppb (6) N/A 18.0 ppb (17) N/A N/A N/A 0.7 ppb (8) 42.0 μg/m3 (39) 21.1 μg/m3 (70) 70.0
 
Sept. 18, 2021, 8 a.m. 27.0 ppb (26) 6.0 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.8 ppb (10) 41.0 μg/m3 (38) 21.2 μg/m3 (71) 71.0
 
Sept. 18, 2021, 7 a.m. 18.0 ppb (17) 0.0 ppb (0) N/A 17.0 ppb (17) N/A N/A N/A 0.7 ppb (8) 40.0 μg/m3 (38) 20.5 μg/m3 (69) 69.0
 
Sept. 18, 2021, 6 a.m. 16.0 ppb (16) 0.0 ppb (0) N/A 16.0 ppb (16) N/A N/A N/A 0.7 ppb (8) 37.0 μg/m3 (35) 19.9 μg/m3 (68) 68.0
 
Sept. 18, 2021, 5 a.m. 16.0 ppb (16) 0.0 ppb (0) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) 43.0 μg/m3 (40) 20.3 μg/m3 (69) 69.0
 
Sept. 18, 2021, 4 a.m. 15.0 ppb (15) 0.0 ppb (0) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) 41.0 μg/m3 (38) 19.8 μg/m3 (68) 68.0
 
Sept. 18, 2021, 3 a.m. 31.0 ppb (30) 9.0 ppb (9) N/A 21.0 ppb (20) N/A N/A N/A 0.9 ppb (11) 44.0 μg/m3 (41) 19.6 μg/m3 (67) 67.0
 
Sept. 18, 2021, 2 a.m. 35.0 ppb (34) 15.0 ppb (15) N/A 20.0 ppb (19) N/A N/A N/A 1.0 ppb (12) 40.0 μg/m3 (38) 17.4 μg/m3 (63) 63.0
 
Sept. 18, 2021, 1 a.m. 45.0 ppb (43) 21.0 ppb (20) N/A 23.0 ppb (22) N/A N/A N/A 0.9 ppb (11) 39.0 μg/m3 (37) 17.2 μg/m3 (62) 62.0
 
Sept. 18, 2021, midnight 41.0 ppb (39) 20.0 ppb (19) N/A 20.0 ppb (19) N/A N/A N/A 0.9 ppb (11) 36.0 μg/m3 (34) 17.2 μg/m3 (62) 62.0
 
Sept. 17, 2021, 11 p.m. 32.0 ppb (31) 17.0 ppb (17) N/A 15.0 ppb (15) N/A N/A N/A 0.8 ppb (10) 37.0 μg/m3 (35) 16.2 μg/m3 (60) 60.0
 
Sept. 17, 2021, 10 p.m. 29.0 ppb (28) 14.0 ppb (14) N/A 15.0 ppb (15) N/A N/A N/A 0.8 ppb (10) 39.0 μg/m3 (37) 15.8 μg/m3 (59) 59.0
 
Sept. 17, 2021, 9 p.m. 31.0 ppb (30) 16.0 ppb (16) N/A 14.0 ppb (14) N/A N/A N/A 0.8 ppb (10) 33.0 μg/m3 (31) 15.0 μg/m3 (58) 58.0
 
Sept. 17, 2021, 8 p.m. 32.0 ppb (31) 18.0 ppb (17) N/A 13.0 ppb (13) N/A N/A N/A 0.8 ppb (10) 32.0 μg/m3 (30) 14.7 μg/m3 (57) 57.0
 
Sept. 17, 2021, 7 p.m. 34.0 ppb (33) 18.0 ppb (17) N/A 15.0 ppb (15) N/A N/A N/A 0.8 ppb (10) 37.0 μg/m3 (35) 15.1 μg/m3 (58) 58.0
 
Sept. 17, 2021, 6 p.m. 40.0 ppb (38) 21.0 ppb (20) N/A 18.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 41.0 μg/m3 (38) 15.5 μg/m3 (59) 59.0
 
Sept. 17, 2021, 5 p.m. 33.0 ppb (32) 16.0 ppb (16) N/A 17.0 ppb (17) N/A N/A N/A 0.7 ppb (8) 38.0 μg/m3 (36) 14.3 μg/m3 (56) 56.0
 
Sept. 17, 2021, 4 p.m. 35.0 ppb (34) 18.0 ppb (17) N/A 17.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 35.0 μg/m3 (33) 13.8 μg/m3 (55) 55.0
 
Sept. 17, 2021, 3 p.m. 35.0 ppb (34) 16.0 ppb (16) N/A 19.0 ppb (18) N/A N/A N/A 0.7 ppb (8) 43.0 μg/m3 (40) 14.0 μg/m3 (55) 55.0
 
Sept. 17, 2021, 2 p.m. 54.0 ppb (51) 31.0 ppb (30) N/A 22.0 ppb (21) N/A N/A N/A 1.0 ppb (12) 52.0 μg/m3 (49) 15.7 μg/m3 (59) 59.0
 
Sept. 17, 2021, 1 p.m. 47.0 ppb (45) 26.0 ppb (25) N/A 21.0 ppb (20) N/A N/A N/A 0.9 ppb (11) 41.0 μg/m3 (38) 16.2 μg/m3 (60) 60.0
 
Sept. 17, 2021, noon 56.0 ppb (54) 32.0 ppb (31) N/A 23.0 ppb (22) N/A N/A N/A 1.0 ppb (12) 40.0 μg/m3 (38) 16.6 μg/m3 (61) 61.0
 
Sept. 17, 2021, 11 a.m. 41.0 ppb (39) 21.0 ppb (20) N/A 20.0 ppb (19) N/A N/A N/A 0.8 ppb (10) 37.0 μg/m3 (35) 16.3 μg/m3 (60) 60.0
 
Sept. 17, 2021, 10 a.m. 25.0 ppb (24) 11.0 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A 0.8 ppb (10) 30.0 μg/m3 (28) 15.9 μg/m3 (59) 59.0
 
Sept. 17, 2021, 9 a.m. 14.0 ppb (14) 5.0 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.5 ppb (6) 29.0 μg/m3 (27) 15.6 μg/m3 (59) 59.0
 
Sept. 17, 2021, 8 a.m. 11.0 ppb (11) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 27.0 μg/m3 (25) 15.2 μg/m3 (58) 58.0
 
Sept. 17, 2021, 7 a.m. 12.0 ppb (12) 4.0 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 31.0 μg/m3 (29) 14.4 μg/m3 (56) 56.0
 
Sept. 17, 2021, 6 a.m. 19.0 ppb (18) 8.0 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.6 ppb (7) 37.0 μg/m3 (35) 14.8 μg/m3 (57) 57.0
 
Sept. 17, 2021, 5 a.m. 14.0 ppb (14) 4.0 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.5 ppb (6) 35.0 μg/m3 (33) 13.7 μg/m3 (55) 55.0
 
Sept. 17, 2021, 4 a.m. 22.0 ppb (21) 9.0 ppb (9) N/A 13.0 ppb (13) N/A N/A N/A 0.6 ppb (7) 41.0 μg/m3 (38) 14.2 μg/m3 (56) 56.0
 
Sept. 17, 2021, 3 a.m. 37.0 ppb (35) 17.0 ppb (17) N/A 19.0 ppb (18) N/A N/A N/A 0.9 ppb (11) 58.0 μg/m3 (53) 16.8 μg/m3 (61) 61.0
 
Sept. 17, 2021, 2 a.m. 34.0 ppb (33) 16.0 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.9 ppb (11) 68.0 μg/m3 (58) 17.8 μg/m3 (63) 63.0
 
Sept. 17, 2021, 1 a.m. 38.0 ppb (36) 19.0 ppb (18) N/A 19.0 ppb (18) N/A N/A N/A 0.9 ppb (11) 40.0 μg/m3 (38) 14.4 μg/m3 (56) 56.0
 
Sept. 17, 2021, midnight 38.0 ppb (36) 21.0 ppb (20) N/A 16.0 ppb (16) N/A N/A N/A 0.9 ppb (11) 44.0 μg/m3 (41) 13.6 μg/m3 (55) 55.0
 
Sept. 16, 2021, 11 p.m. 32.0 ppb (31) 18.0 ppb (17) N/A 14.0 ppb (14) N/A N/A N/A 0.8 ppb (10) 40.0 μg/m3 (38) 13.1 μg/m3 (54) 54.0
 
Sept. 16, 2021, 10 p.m. 46.0 ppb (44) 20.0 ppb (19) N/A 25.0 ppb (24) N/A N/A N/A 1.0 ppb (12) 40.0 μg/m3 (38) 12.9 μg/m3 (53) 53.0
 
Sept. 16, 2021, 9 p.m. 41.0 ppb (39) 20.0 ppb (19) N/A 20.0 ppb (19) N/A N/A N/A 0.9 ppb (11) 40.0 μg/m3 (38) 13.4 μg/m3 (54) 54.0
 
Sept. 16, 2021, 8 p.m. 32.0 ppb (31) 16.0 ppb (16) N/A 16.0 ppb (16) N/A N/A N/A 0.7 ppb (8) 34.0 μg/m3 (32) 12.8 μg/m3 (53) 53.0
 
Sept. 16, 2021, 7 p.m. 32.0 ppb (31) 15.0 ppb (15) N/A 16.0 ppb (16) N/A N/A N/A 0.7 ppb (8) 46.0 μg/m3 (43) 14.0 μg/m3 (55) 55.0
 
Sept. 16, 2021, 6 p.m. 32.0 ppb (31) 15.0 ppb (15) N/A 17.0 ppb (17) N/A N/A N/A 0.7 ppb (8) 40.0 μg/m3 (38) 12.8 μg/m3 (53) 53.0
 
Sept. 16, 2021, 5 p.m. 30.0 ppb (29) 14.0 ppb (14) N/A 16.0 ppb (16) N/A N/A N/A 0.7 ppb (8) 39.0 μg/m3 (37) 13.4 μg/m3 (54) 54.0
 
Sept. 16, 2021, 4 p.m. 31.0 ppb (30) 14.0 ppb (14) N/A 16.0 ppb (16) N/A N/A N/A 0.7 ppb (8) 46.0 μg/m3 (43) 13.6 μg/m3 (55) 55.0
 
Sept. 16, 2021, 3 p.m. 41.0 ppb (39) 19.0 ppb (18) N/A 21.0 ppb (20) N/A N/A N/A 0.8 ppb (10) 56.0 μg/m3 (52) 15.3 μg/m3 (58) 58.0
 
Sept. 16, 2021, 2 p.m. 51.0 ppb (49) 27.0 ppb (26) N/A 23.0 ppb (22) N/A N/A N/A 0.8 ppb (10) 60.0 μg/m3 (54) 16.0 μg/m3 (60) 60.0
 
Sept. 16, 2021, 1 p.m. 68.0 ppb (66) 42.0 ppb (40) N/A 25.0 ppb (24) N/A N/A N/A 1.1 ppb (13) 60.0 μg/m3 (54) 17.5 μg/m3 (63) 66.0
 
Sept. 16, 2021, noon 53.0 ppb (50) 27.0 ppb (26) N/A 25.0 ppb (24) N/A N/A N/A 0.9 ppb (11) 44.0 μg/m3 (41) 15.6 μg/m3 (59) 59.0
 
Sept. 16, 2021, 11 a.m. 48.0 ppb (46) 25.0 ppb (24) N/A 23.0 ppb (22) N/A N/A N/A 0.8 ppb (10) 44.0 μg/m3 (41) 15.6 μg/m3 (59) 59.0
 
Sept. 16, 2021, 10 a.m. 15.0 ppb (15) 2.0 ppb (2) N/A 13.0 ppb (13) N/A N/A N/A 0.6 ppb (7) 34.0 μg/m3 (32) 14.0 μg/m3 (55) 55.0
 
Sept. 16, 2021, 9 a.m. 15.0 ppb (15) 1.0 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A 0.5 ppb (6) 35.0 μg/m3 (33) 14.1 μg/m3 (56) 56.0
 
Sept. 16, 2021, 8 a.m. 20.0 ppb (19) 2.0 ppb (2) N/A 17.0 ppb (17) N/A N/A N/A 0.6 ppb (7) 40.0 μg/m3 (38) 14.2 μg/m3 (56) 56.0
 
Sept. 16, 2021, 7 a.m. 25.0 ppb (24) 4.0 ppb (4) N/A 20.0 ppb (19) N/A N/A N/A 0.7 ppb (8) 99.0 μg/m3 (73) 18.2 μg/m3 (64) 73.0
 
Sept. 16, 2021, 6 a.m. 29.0 ppb (28) 7.0 ppb (7) N/A 21.0 ppb (20) N/A N/A N/A 0.7 ppb (8) 31.0 μg/m3 (29) 13.4 μg/m3 (54) 54.0
 
Sept. 16, 2021, 5 a.m. 39.0 ppb (37) 11.0 ppb (11) N/A 28.0 ppb (27) N/A N/A N/A 0.9 ppb (11) 38.0 μg/m3 (36) 14.3 μg/m3 (56) 56.0
 
Sept. 16, 2021, 4 a.m. 39.0 ppb (37) 6.0 ppb (6) N/A 32.0 ppb (31) N/A N/A N/A 0.9 ppb (11) 38.0 μg/m3 (36) 15.2 μg/m3 (58) 58.0
 
Sept. 16, 2021, 3 a.m. 50.0 ppb (48) 13.0 ppb (13) N/A 36.0 ppb (34) N/A N/A N/A 1.1 ppb (13) 43.0 μg/m3 (40) 15.9 μg/m3 (59) 59.0
 
Sept. 16, 2021, 2 a.m. 48.0 ppb (46) 11.0 ppb (11) N/A 37.0 ppb (35) N/A N/A N/A 1.1 ppb (13) 47.0 μg/m3 (44) 17.1 μg/m3 (62) 62.0
 
Sept. 16, 2021, 1 a.m. 48.0 ppb (46) 12.0 ppb (12) N/A 36.0 ppb (34) N/A N/A N/A 1.0 ppb (12) 46.0 μg/m3 (43) 14.6 μg/m3 (57) 57.0
 
Sept. 16, 2021, midnight 52.0 ppb (50) 16.0 ppb (16) N/A 35.0 ppb (34) N/A N/A N/A 1.0 ppb (12) 52.0 μg/m3 (49) 14.3 μg/m3 (56) 56.0
 
Sept. 15, 2021, 11 p.m. 58.0 ppb (56) 21.0 ppb (20) N/A 37.0 ppb (35) N/A N/A N/A 1.1 ppb (13) 41.0 μg/m3 (38) 12.8 μg/m3 (53) 56.0
 
Sept. 15, 2021, 10 p.m. 45.0 ppb (43) 17.0 ppb (17) N/A 28.0 ppb (27) N/A N/A N/A 0.8 ppb (10) 39.0 μg/m3 (37) 12.6 μg/m3 (53) 53.0
 
Sept. 15, 2021, 9 p.m. 30.0 ppb (29) 10.0 ppb (10) N/A 20.0 ppb (19) N/A N/A N/A 0.7 ppb (8) 38.0 μg/m3 (36) 11.5 μg/m3 (48) 48.0
 
Sept. 15, 2021, 8 p.m. 20.0 ppb (19) 6.0 ppb (6) N/A 14.0 ppb (14) N/A N/A N/A 0.6 ppb (7) 28.0 μg/m3 (26) 9.1 μg/m3 (38) 38.0
 
Sept. 15, 2021, 7 p.m. 20.0 ppb (19) 7.0 ppb (7) N/A 13.0 ppb (13) N/A N/A N/A 0.5 ppb (6) 19.0 μg/m3 (18) 6.5 μg/m3 (28) 28.0
 
Sept. 15, 2021, 6 p.m. 33.0 ppb (32) 18.0 ppb (17) N/A 14.0 ppb (14) N/A N/A N/A 0.6 ppb (7) N/A N/A 32.0
 
Sept. 15, 2021, 5 p.m. 17.0 ppb (17) 7.0 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A 0.6 ppb (7) N/A N/A 17.0
 
Sept. 15, 2021, 4 p.m. 12.0 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 17.0 μg/m3 (16) 6.6 μg/m3 (28) 28.0
 
Sept. 15, 2021, 3 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (5) 16.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
Sept. 15, 2021, 2 p.m. 12.0 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.5 ppb (6) 21.0 μg/m3 (20) 7.5 μg/m3 (32) 32.0
 
Sept. 15, 2021, 1 p.m. 15.0 ppb (15) 3.0 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.5 ppb (6) 25.0 μg/m3 (24) 9.4 μg/m3 (40) 40.0
 
Sept. 15, 2021, noon 13.0 ppb (13) 2.0 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.5 ppb (6) 22.0 μg/m3 (21) 9.1 μg/m3 (38) 38.0
 
Sept. 15, 2021, 11 a.m. 11.0 ppb (11) 2.0 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.4 ppb (5) 16.0 μg/m3 (15) 7.1 μg/m3 (30) 30.0
 
Sept. 15, 2021, 10 a.m. 7.0 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (5) 17.0 μg/m3 (16) 6.5 μg/m3 (28) 28.0
 
Sept. 15, 2021, 9 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (5) 17.0 μg/m3 (16) 7.1 μg/m3 (30) 30.0
 
Sept. 15, 2021, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (5) 22.0 μg/m3 (21) 8.7 μg/m3 (37) 37.0
 
Sept. 15, 2021, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (5) 23.0 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2021, 6 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (5) 31.0 μg/m3 (29) 10.5 μg/m3 (44) 44.0
 
Sept. 15, 2021, 5 a.m. 15.0 ppb (15) 4.0 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.5 ppb (6) 27.0 μg/m3 (25) 10.7 μg/m3 (45) 45.0
 
Sept. 15, 2021, 4 a.m. 21.0 ppb (20) 7.0 ppb (7) N/A 14.0 ppb (14) N/A N/A N/A 0.6 ppb (7) 28.0 μg/m3 (26) 10.7 μg/m3 (45) 45.0
 
Sept. 15, 2021, 3 a.m. 24.0 ppb (23) 11.0 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A 0.7 ppb (8) 30.0 μg/m3 (28) 10.5 μg/m3 (44) 44.0
 
Sept. 15, 2021, 2 a.m. 27.0 ppb (26) 12.0 ppb (12) N/A 14.0 ppb (14) N/A N/A N/A 0.7 ppb (8) 34.0 μg/m3 (32) 11.6 μg/m3 (49) 49.0
 
Sept. 15, 2021, 1 a.m. 50.0 ppb (48) 27.0 ppb (26) N/A 23.0 ppb (22) N/A N/A N/A 0.9 ppb (11) 39.0 μg/m3 (37) 12.2 μg/m3 (52) 52.0
 
Sept. 15, 2021, midnight 40.0 ppb (38) 21.0 ppb (20) N/A 18.0 ppb (17) N/A N/A N/A 0.9 ppb (11) 36.0 μg/m3 (34) 11.3 μg/m3 (48) 48.0
 
Sept. 14, 2021, 11 p.m. 44.0 ppb (42) 25.0 ppb (24) N/A 19.0 ppb (18) N/A N/A N/A 0.9 ppb (11) 40.0 μg/m3 (38) 11.5 μg/m3 (48) 48.0
 
Sept. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.9 ppb (11) 37.0 μg/m3 (35) 10.7 μg/m3 (45) 45.0
 
Sept. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.9 ppb (11) 40.0 μg/m3 (38) 12.1 μg/m3 (51) 51.0
 
Sept. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) 43.0 μg/m3 (40) 12.4 μg/m3 (52) 52.0
 
Sept. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 41.0 μg/m3 (38) 12.9 μg/m3 (53) 53.0
 
Sept. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 47.0 μg/m3 (44) 14.3 μg/m3 (56) 56.0
 
Sept. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) 54.0 μg/m3 (50) 16.6 μg/m3 (61) 61.0
 
Sept. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 57.0 μg/m3 (52) 18.3 μg/m3 (65) 65.0
 
Sept. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 69.0 μg/m3 (58) 21.0 μg/m3 (70) 70.0
 
Sept. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (5) 72.0 μg/m3 (60) 20.0 μg/m3 (68) 68.0
 
Sept. 14, 2021, 1 p.m. 19.0 ppb (18) 9.0 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.5 ppb (6) 48.0 μg/m3 (45) 14.2 μg/m3 (56) 56.0
 
Sept. 14, 2021, noon 28.0 ppb (27) 13.0 ppb (13) N/A 15.0 ppb (15) N/A N/A N/A 0.6 ppb (7) 49.0 μg/m3 (46) 14.2 μg/m3 (56) 56.0
 
Sept. 14, 2021, 11 a.m. 20.0 ppb (19) 9.0 ppb (9) N/A 11.0 ppb (11) N/A N/A N/A 0.6 ppb (7) 34.0 μg/m3 (32) 12.4 μg/m3 (52) 52.0
 
Sept. 14, 2021, 10 a.m. 15.0 ppb (15) 5.0 ppb (5) N/A 9.0 ppb (9) N/A N/A N/A 0.5 ppb (6) 31.0 μg/m3 (29) 11.8 μg/m3 (50) 50.0
 
Sept. 14, 2021, 9 a.m. 11.0 ppb (11) 2.0 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.4 ppb (5) 27.0 μg/m3 (25) 11.2 μg/m3 (47) 47.0
 
Sept. 14, 2021, 8 a.m. 12.0 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.4 ppb (5) 25.0 μg/m3 (24) 10.4 μg/m3 (44) 44.0
 
Sept. 14, 2021, 7 a.m. 8.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (5) 23.0 μg/m3 (22) 9.4 μg/m3 (40) 40.0
 
Sept. 14, 2021, 6 a.m. 7.0 ppb (7) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (5) 23.0 μg/m3 (22) 9.4 μg/m3 (40) 40.0
 
Sept. 14, 2021, 5 a.m. 16.0 ppb (16) 6.0 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.4 ppb (5) 21.0 μg/m3 (20) 9.2 μg/m3 (39) 39.0
 
Sept. 14, 2021, 4 a.m. 14.0 ppb (14) 5.0 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.5 ppb (6) 24.0 μg/m3 (23) 9.8 μg/m3 (41) 41.0
 
Sept. 14, 2021, 3 a.m. 17.0 ppb (17) 7.0 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A 0.6 ppb (7) 29.0 μg/m3 (27) 11.1 μg/m3 (47) 47.0
 
Sept. 14, 2021, 2 a.m. 22.0 ppb (21) 7.0 ppb (7) N/A 14.0 ppb (14) N/A N/A N/A 0.7 ppb (8) 30.0 μg/m3 (28) 13.6 μg/m3 (55) 55.0
 
Sept. 14, 2021, 1 a.m. 39.0 ppb (37) 13.0 ppb (13) N/A 25.0 ppb (24) N/A N/A N/A 0.9 ppb (11) 48.0 μg/m3 (45) 17.7 μg/m3 (63) 63.0
 
Sept. 14, 2021, midnight 51.0 ppb (49) 18.0 ppb (17) N/A 32.0 ppb (31) N/A N/A N/A 1.1 ppb (13) 49.0 μg/m3 (46) 18.3 μg/m3 (65) 65.0
 
Sept. 13, 2021, 11 p.m. 26.0 ppb (25) 6.0 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.7 ppb (8) 40.0 μg/m3 (38) 18.2 μg/m3 (64) 64.0
 
Sept. 13, 2021, 10 p.m. 33.0 ppb (32) 13.0 ppb (13) N/A 20.0 ppb (19) N/A N/A N/A 0.7 ppb (8) 43.0 μg/m3 (40) 21.4 μg/m3 (71) 71.0
 
Sept. 13, 2021, 9 p.m. 31.0 ppb (30) 11.0 ppb (11) N/A 19.0 ppb (18) N/A N/A N/A 0.8 ppb (10) N/A N/A 30.0
 
Sept. 13, 2021, 8 p.m. 37.0 ppb (35) 15.0 ppb (15) N/A 22.0 ppb (21) N/A N/A N/A 0.8 ppb (10) N/A N/A 35.0
 
Sept. 13, 2021, 7 p.m. 31.0 ppb (30) 12.0 ppb (12) N/A 18.0 ppb (17) N/A N/A N/A 0.7 ppb (8) N/A N/A 30.0
 
Sept. 13, 2021, 6 p.m. 32.0 ppb (31) 14.0 ppb (14) N/A 18.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 49.0 μg/m3 (46) 19.7 μg/m3 (67) 67.0
 
Sept. 13, 2021, 5 p.m. 39.0 ppb (37) 17.0 ppb (17) N/A 22.0 ppb (21) N/A N/A N/A 0.8 ppb (10) 56.0 μg/m3 (52) 20.7 μg/m3 (70) 70.0
 
Sept. 13, 2021, 4 p.m. 32.0 ppb (31) 14.0 ppb (14) N/A 18.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 46.0 μg/m3 (43) 19.3 μg/m3 (67) 67.0
 
Sept. 13, 2021, 3 p.m. 34.0 ppb (33) 15.0 ppb (15) N/A 18.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 53.0 μg/m3 (50) 19.7 μg/m3 (67) 67.0
 
Sept. 13, 2021, 2 p.m. 53.0 ppb (50) 25.0 ppb (24) N/A 28.0 ppb (27) N/A N/A N/A 0.9 ppb (11) 54.0 μg/m3 (50) 21.8 μg/m3 (72) 72.0
 
Sept. 13, 2021, 1 p.m. 60.0 ppb (58) 28.0 ppb (27) N/A 32.0 ppb (31) N/A N/A N/A 1.0 ppb (12) 62.0 μg/m3 (55) 23.2 μg/m3 (75) 75.0
 
Sept. 13, 2021, noon 36.0 ppb (34) 9.0 ppb (9) N/A 26.0 ppb (25) N/A N/A N/A 0.8 ppb (10) 51.0 μg/m3 (48) 21.7 μg/m3 (72) 72.0
 
Sept. 13, 2021, 11 a.m. 41.0 ppb (39) 14.0 ppb (14) N/A 27.0 ppb (26) N/A N/A N/A 0.8 ppb (10) 45.0 μg/m3 (42) 21.2 μg/m3 (71) 71.0
 
Sept. 13, 2021, 10 a.m. 20.0 ppb (19) 4.0 ppb (4) N/A 15.0 ppb (15) N/A N/A N/A 0.6 ppb (7) 36.0 μg/m3 (34) 20.2 μg/m3 (69) 69.0
 
Sept. 13, 2021, 9 a.m. 23.0 ppb (22) 5.0 ppb (5) N/A 17.0 ppb (17) N/A N/A N/A 0.6 ppb (7) 35.0 μg/m3 (33) 20.6 μg/m3 (69) 69.0
 
Sept. 13, 2021, 8 a.m. 7.0 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 34.0 μg/m3 (32) 20.7 μg/m3 (70) 70.0
 
Sept. 13, 2021, 7 a.m. 9.0 ppb (9) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 33.0 μg/m3 (31) 20.1 μg/m3 (68) 68.0
 
Sept. 13, 2021, 6 a.m. 10.0 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.5 ppb (6) 35.0 μg/m3 (33) 19.6 μg/m3 (67) 67.0
 
Sept. 13, 2021, 5 a.m. 14.0 ppb (14) 2.0 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.6 ppb (7) 35.0 μg/m3 (33) 18.8 μg/m3 (66) 66.0
 
Sept. 13, 2021, 4 a.m. 15.0 ppb (15) 3.0 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.6 ppb (7) 33.0 μg/m3 (31) 18.3 μg/m3 (65) 65.0
 
Sept. 13, 2021, 3 a.m. 16.0 ppb (16) 4.0 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.7 ppb (8) 34.0 μg/m3 (32) 17.6 μg/m3 (63) 63.0
 
Sept. 13, 2021, 2 a.m. 18.0 ppb (17) 6.0 ppb (6) N/A 12.0 ppb (12) N/A N/A N/A 0.7 ppb (8) 33.0 μg/m3 (31) 16.8 μg/m3 (61) 61.0
 
Sept. 13, 2021, 1 a.m. 25.0 ppb (24) 10.0 ppb (10) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) 36.0 μg/m3 (34) 16.4 μg/m3 (61) 61.0
 
Sept. 13, 2021, midnight 29.0 ppb (28) 11.0 ppb (11) N/A 17.0 ppb (17) N/A N/A N/A 0.8 ppb (10) 37.0 μg/m3 (35) 17.8 μg/m3 (63) 63.0
 
Sept. 12, 2021, 11 p.m. 29.0 ppb (28) 10.0 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A 0.9 ppb (11) 46.0 μg/m3 (43) 20.1 μg/m3 (68) 68.0
 
Sept. 12, 2021, 10 p.m. 35.0 ppb (34) 12.0 ppb (12) N/A 22.0 ppb (21) N/A N/A N/A 0.9 ppb (11) 39.0 μg/m3 (37) 17.5 μg/m3 (63) 63.0